Bush for two-part belt-pulleys.



No. 679,338. Patented July 30, l90|-. F. BUHBBEBK.

BUSH FOR TWO-PART BELT PULLEYS.

(Application filed Jan. 18, 19 01.)

(No Model.)

Mrs ra'rhs arnnr rrrcn,

FRITZ ROHRBEOK, OF ST. VEIT-ON-TI'IE-TRIESTING, AUSTRIA-HUN GARY.

BUSH FOR TO PART BELT -PULLEYS.

SPECIFICATION forming part of Letters Patent No. 679,338, dated July 30,1901. Application filed January 18, 1901. Serial No. 43,793. (No model.)

To all whom, it may concern.-

Be it known that I,FR1TZ RoHRBncK, a subject of the Emperor ofAustria-Hungary, residing at St.Veit-on-the-Triesting,in the Province ofLower Austria, in the Empire of Austria-Hungary, have invented certainnew and useful Improvements in Bushes for Two-Part Belt Pulleys orWheels; and I do hereby declare the following to bea full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon, which form a part of this specification.

This invention relates to a construction of light and cheaply-produciblebush for lining the bosses of two-part belt pulleys or other wheelsadapted to be fixed on shafting. Such a bush consists of two curvedcorrugated shells, each of which partially embraces the shaft, theseshells being formed by pressure or otherwise from sheet or bar iron andserving to fill the space between the shafting and the inner surface ofthe wheel-boss.

Figure l of the accompanying drawings illustratesithe boss portion of atwo-part sheetmetal pulley, together with the shafting and the improvedbush,- in longitudinal section. Fig. 2 is a side View, partly insection.

The bushing consists of two similar shells at, each surrounding nearlyhalf the shaft 5. The shells are corrugated to form channels having aflat bottom and diverging sides and can be manufactured by pressure orin any other way from sheet or bar iron.

In practice the shells are inserted between the shaft 17 and the halvesof the boss 0 of the two-part belt pulley or wheel, the two parts ofwhich are brought together by the screws 61. The inner surfaces 6 of theshells at are thus brought into close contact with the shaft b, whiletheir outer surfaces are forced tightly against the inner surface of theboss 0.

Bushings of this kind are considerably heavy metal bushes of being muchlighter and cheaper in construction, especially as the contactingsurfaces need no dressing.

I claim 1. A bushing for pulleys and the like, comprising a sheet-metalshell channeled circumferentially to form alternating internal andexternal bearings contacting with the shaft and hub or eye of the pulleyrespectively, for the purpose set forth.

2. A bushing for pulleys and the like, comprising a sheet-metal shellchanneled circumferentially, said channels having flat bases anddiverging lateral walls and forming alternating internal and externalbearings contacting with the shaft and hub or eye of the pulleyrespectively, for the purpose set forth.

3. A bushing for pulleys and the like, consisting of sheet-metal shellelements segmental in cross-section and channeled to form when assembleda shell having alternating internal and external circular bearingsrespectively contacting with the shaft and hub or eye of the pulley, forthe purpose set forth.

4. A bushing for pulleys and the like, consisting of sheet-metal shellelements segmental in cross-section and channeled to form when assembleda shell having alternating internal and external circular fiat bearingswith diverging side walls, respectively contacting with the shaft andhub or eye of the wheel, for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

J osnn RUBERCH, ALVESTO S. Hoeun.

